Tire shoulder



FIG. 1 is a side perspective view of a tire shoulder showing my new design;

FIG. 2 is a side elevational view thereof, the opposite side being identical thereto; and,

FIG. 3 is a front elevational view thereof.

The broken lines defining the tread, inner bead, and the peripheral boundary between the claimed tire shoulder and the tread depict environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a tire shoulder, as shown and described. 